Digital Commons Network^™

Influence Of Urban Land Use Land Cover Changes On Land Surface Temperature In Dar Es Salaam Metropolitan City, Tanzania: The Use Of Geospatial Approach, Olipa Simon, Nestory Yamungu, James Lyimo

Tanzania Journal of Science

Land use land cover (LULC) changes affect the planet's energy balance and region's climate. Land Surface Temperature (LST) is a vital indicator of this change. Studies in Dar es Salaam Metropolitan City have investigated LST and its relationships with building heights and densities, urban heat islands, spectral indices, and urban morphological determinants. The present study used cross-sectional profiles, chord diagrams, and simple linear regression models to examine the influence of LULC changes on the LST in Dar es Salaam Metropolitan City (DMC). LST was extracted from Landsat 5 TM and 8 OLI/TIRS images for 1995, 2009, and 2017. LULC was …

Application Of Agile And Simulation Approaches For The Maximal Benefits Of Reduced Turnaround Time From The Point Of Care Testing, Yusta W. Simwita, Berit I. Helgheim

Tanzania Journal of Science

This paper uses simulation to explore improvement opportunities in the orthopaedic care process. Secondly, this study used a combination of simulation and agile strategies to explore agile operational plans that can be adopted  to maximize the benefits of reduced turnaround time. Data used for this study was collected by observing the entire orthopaedic care process. A total of 635 observations were obtained, with 179 out of these observations undergoing the whole care process. The actual collected patient data were compared with the simulation output to validate the developed simulation. Different scenarios were developed to test operational plans for the maximal …

The Causal Links Between Urbanization, Energy Use And Carbon Emissions: A Case Of Sadc Region, Pendo T Kivyiro

Tanzania Journal of Science

The study aimed at examining the causal links between urbanization, energy consumption and carbon emissions in the case of selected SADC countries. The study employed annual time series data spanning from 1988 to 2020 extracted from the World Bank Development indicator Databank. A Pedroni cointegration test was employed to test whether the variables of interest move together in the long run. Granger causality backed with Full Modified Ordinary Least Squares (FMOLS) was used to detect the direction and the nature of causality among the variables of interest. The results from Pedroni cointegration test revealed that the variables move together in …

Optimal Harvesting Of Wildebeest-Lion Interactions In Serengeti Ecosystem With Prey Refuge, Alfred Kisuda Hugo, Thadei Damas Sagamiko, Isambi Sailon Mbalawata

Tanzania Journal of Science

This paper describes an optimal harvesting policy for a wildebeest-lion prey-predator system in the Serengeti ecosystem with prey refuge. A Holling Type II prey-predator model with a nonlinear harvesting aspect was developed. Theoretical and numerical analyses were performed, and the dynamic behaviour of the system was found to be mathematically well-posed. Data on lion population density from the Serengeti ecosystem were used to fit the model using the maximum-likelihood method. The optimal harvesting policy was numerically determined using Pontryagin’s maximum principle. Furthermore, the impact of prey refuge on the predator population was numerically evaluated. The results of this study highlight …

Using Artificial Intelligence For Enhancing Human Creativity, Mayssa Ahmad Ali Elfa, Mina Eshaq Tawfilis Dawood

Journal of Art, Design and Music

Often the motive behind the use of any new technology is to increase the quality of innovative artwork. Artificial Intelligence (AI) is the process of creating intelligent machines that can imitate or exceed human abilities in specific tasks. AI has become an important part of our daily lives, influencing many areas of our lives. As this technology evolves and becomes more sophisticated, it will eventually revolutionize the way we use computers. Researchers are looking for ways to expand the scope of artificial intelligence by providing people with more powerful tools to develop their creativity. At the same time, they are …

U And I : A Preference-Based Mobile App User Interface Design For Productive Learning Among Dlsu Shs Students, Zia Cherryanne R. Correa, Essan Purple Love A. Neron, Sophia Denisse A. Sabate

DLSU Senior High School Research Congress

Mobile applications have proliferated as technology advances, and many students have integrated them into their daily lives. Productivity applications have evolved into personal assistants, offering users many tools to assist them with daily tasks. Fundamentally, as students struggle to balance different workloads, productivity applications are a means to get their schoolwork organized and done quickly for a more efficient and productive workflow. The design of an application is an essential factor in why and how users continue to use specific applications. A well-designed system facilitates effective interaction between a user and an app. This study investigates the significant relationship between …

An Exploratory Study Of Ott Platform Movie Recommendation Using Cosine Similarity, Ned Jeonyl P. Arban, Paul Clarence B. Arce, Ralph Kobe R. Bernabe, Jin Woo C. Kim, Justine Patrique A. Tillermo, Katrina Ysabel C. Solomo

DLSU Senior High School Research Congress

“Over the Top” platforms, or OTT platforms, are where movies and TV shows can be watched. The main focus of the research is the recommendation system of OTT platforms, studying its mechanisms. The researchers also aim to identify relevant features that are most useful to a recommendation system. The researchers conducted data preprocessing such as the one hot encoding method. Cosine similarity was employed as the foundational algorithm for the recommendation system. Upon generating several recommendations using different sets of features, the most relevant ones were determined through a survey. By utilizing the cosine similarity algorithm, the research aims to …

Optimization Of Extraction And Determination Of Total Saponins From Soapberries (Sapindus Mukorossi), Andrea Niña Nicole A. Bago, Mikyla Aeriel P. Fajutagana, Jaleane Quicia N. Gilbuena, Janelle Beatrice C. Mateo

DLSU Senior High School Research Congress

Sapindus mukorossi, also known as soap nuts or soapberries, have long been used as a natural alternative to detergents. Soap nuts are known to contain saponins which are the active ingredients of soaps and detergents. The use of soap nuts is quite common among people who prefer the use of natural products as opposed to synthetic detergents. However, the complex procedure for the preparation of the soap nuts serve as a deterrent for the beneficial and practical consumption of this natural resource. This study investigated and optimized the extraction process of saponins from soap nuts; and determined the impact …

River Tamarind (Leucaena Leucocephala) Pea Pods As Carbon Electrode For Microbial Fuel Cell, Nicole Angelika C. Belen, Resny B. Cayaban, Ian Gabriel J. Manzano, Bhea Charisse R. Nofuente, Angela C. Padayao

DLSU Senior High School Research Congress

With global energy security as the ultimate goal, efforts have been made in a number of countries to produce energy from a variety of sources. There is an urgent need to seek alternative methods of generating energy. Thus, the researchers proposed a study that aims to produce activated carbon from River Tamarind (Leucaena leucocephala) pods that may be utilized as an electrode in a microbial fuel cell. The main goal of this study was to compare the output voltage produced by an electrode made from river tamarind pea pods to that of a commercial carbon electrode. Two sets of dual-chambered …

Solid Waste Management Awareness And Practices Of Dlsu Shs Manila Students During The Covid-19 Pandemic, Ingrid R. Bote, Christine Lianne M. Dasig, Jansen Sajeh S. Mortega

DLSU Senior High School Research Congress

COVID-19 prompted social distancing and increased solid waste from personal protective equipment and single-use products. Starting S.Y. 2022 - 2023, DLSU Manila Senior High School (DLSU-M SHS) offered Blended Flexible Learning (BFL) for partial face-to-face learning. Correspondingly, this study aimed to provide data for university stakeholders regarding Solid Waste Management (SWM) policies. This research identified DLSU-M SHS students' influences of awareness regarding SWM, their awareness levels, and the extent of SWM practices. The researchers pilot-tested and modified the Solid Waste Management Awareness and Practices Questionnaire from Molina and Catan (2021) to address the objectives and fit University policies with the …

Developing Horizontal Expertise With Professional Learning Communities In Social Studies Teacher Preparation, Charles Tocci, Ann Marie Ryan

The Councilor: A National Journal of the Social Studies

As teacher education programs become increasingly organized around accreditation and licensure standards, finding opportunities to be responsive to teacher candidates' needs and interests has become more difficult. This paper traces the evolution of a professional learning community for secondary social studies teacher candidates as a key feature of one teacher education program and analyzes the collaborative projects designed for the purpose of developing horizontal expertise. We find that professional learning communities can serve as dynamic spaces to co-construct learning experiences with candidates in ways that prepare them for future professional learning as practicing social studies teachers.

Add To Cart: What Is The Role Of A Shopping Platform In Influencing Purchasing Behavior Among Grade 12 Dlsu Manila Students In The Post-Covid-19 Pandemic, Don Josh Vincent Bragado Almanza, Mary Maxinne Corcega Arrieta, Kimberly Jhenin Herrera Mangilog, Zhanelle Anne Padura Villegas

DLSU Senior High School Research Congress

The Internet has become a part of people's daily lives, including sending messages and other forms of communication. Aside from this, the internet has been associated with the wide-range use of E-Commerce and Shopping Platforms, which influence the purchasing behavior of individuals on both a local and international scale. The current study generally aimed to (1) analyze the factors that influence the purchasing habits of Grade 12 Students from DLSU Manila during the COVID-19 pandemic, (2) the use of E-commerce and its dependability to be trustworthy and secure as physical stores, and (3) how E-Commerce can be enhanced in terms …

Add To Cart: What Is The Role Of A Shopping Platform In Influencing Purchasing Behavior Among Grade 12 Dlsu Manila Students In The Post-Covid-19 Pandemic, Don Josh Vincent Bragado Almanza, Mary Maxinne Corcega Arrieta, Kimberly Jhenin Herrera Mangilog, Zhanelle Anne Padura Villegas

DLSU Senior High School Research Congress

The Internet has become a part of people's daily lives, including sending messages and other forms of communication. Aside from this, the internet has been associated with the wide-range use of E-Commerce and Shopping Platforms, which influence the purchasing behavior of individuals on both a local and international scale. The current study generally aimed to (1) analyze the factors that influence the purchasing habits of Grade 12 Students from DLSU Manila during the COVID-19 pandemic, (2) the use of E-commerce and its dependability to be trustworthy and secure as physical stores, and (3) how E-Commerce can be enhanced in terms …

Status And Prospects Of Fully Mechanized Mining Technology In Vietnam Coal Mines From 2005 To 2020, Hai Duong Duc, Quang Dao Hong, Viet Phan Van, Thang Ngo Van

Journal of Sustainable Mining

This paper analyzes the achievement and the failures of applying the mechanized mining method in underground coal mines by the Vietnam National Coal – Mineral Industries Holding Corporation Ltd. (VINACOMIN) for 15 years (from 2005 to 2020). It also proposes the recommendations for developing mechanized mining in order to improve coal production, productivity and safety management for the sustainable development of Vietnam’s underground coal mining in the period 2021-2025

Climate Of A Cave Laboratory Representative For Rock Art Caves In The Vézère Area (South-West France), Delphine Lacanette, Léna Bassel, Fabien Salmon, Jean-Christophe Portais, Bruno Bousquet, Rémy Chapoulie, Faten Ammari, Philippe Malaurent, Catherine Ferrier

International Journal of Speleology

Leye Cave (Dordogne, France) is a laboratory cave in the Vézère area, a region that contains some of the most famous rock art caves in the world such as Lascaux, Font-de-Gaume and Combarelles, and is listed as Human World Heritage by UNESCO. Leye Cave was selected because it is representative of painted caves, with respect to parameters such as its geological stage, the presence of water and carbon dioxide, the geological state of its walls, and the size of the cave. These wall states are studied to better understand the conditions of conservation of rock art caves without damaging them. …

Near-Ir Spectroscopic Analysis Of The Primary Volatile Composition Of Long And Short-Period Comets, Younas Khan

Dissertations

Comets are among the most well-preserved objects that formed in the protosolar nebula ∼4.5 Gyr ago. Hence, they are important for understanding various aspects of the formation, evolution, and habitability of the solar system. Multiple primary volatiles (molecules directly sublimating into the coma from the nucleus) emit via rovibrational transitions in the near-IR, providing opportunities to calculate their abundances. To date, only ∼50 comets have been characterized for their primary volatiles, with the short-period Jupiter-family comets (JFCs) being significantly underrepresented. In contrast, hundreds of comets have been sampled at optical/UV wavelengths, primarily for the composition of daughter species, leading to …

Fractional Charge Concept Opened Gates For New Ideas On Composition Of Matter, Polievkt Perov

College of Arts & Sciences Faculty Works

Before the concept of quarks with fractional electric charges was introduced, the electron charge magnitude e was considered as the smallest amount of charge in nature so the charge of any object could be only an integer number of ± e. Then it was suggested that the proton and neutrons are composed of quarks with the fractional charges, combined in such a way that the total charge of a proton occurred to be that same known charge +e, and the charge of a neutron was zero. We suggest expanding that fruitful concept of fractional charges to build structural models of …

An Analysis Of The Impact And Efficacy Of An Online Mindfulness-Based Intervention As A Support For First-Year University Students, Wyndham Chalmers, Aiden Carthy, Maria Kenneally, Niamh Bruce, Colm Mcguinness, Philip Owende

Articles

As a result of the COVID-19 pandemic, many university courses transitioned to online delivery, therefore, educators and students faced new challenges associated with the delivery of modules and the provision of necessary student supports. Given the scale of this transition, it is likely that many universities will continue to teach remotely far beyond the reach of any pandemic specific restrictions. This study sought to explore the impact and efficacy of a five-week online mindfulness course to a cohort of first year university students (n = 25) at Technological University Dublin (TU Dublin), Ireland. Results demonstrated that participation in the course …

Lagrange Multipliers And Neutrosophic Nonlinear Programming Problems Constrained By Equality Constraints, Maissam Jdid, Florentin Smarandache

Neutrosophic Systems with Applications

Operations research science is defined as the science that is concerned with applying scientific methods to complex problems in managing and directing large systems of people, including resources and tools in various fields, private and governmental work, peace and war, politics, administration, economics, planning and implementation in various domains. It uses scientific methods that take the language of mathematics as a basis for it and uses computer, without which it would not have been possible to achieve numerical solutions to the raised problems, those that need correct solutions, when the solutions abound and the options are multiple, so we need …

Optimal Dispatch Of Community Integrated Energy System With Energy Storage Considering Demand‑Side Controllable Load, Junyu Zhou, Wei Li, Jie Hua, Bingxiang Huang, Bohan Liu

Journal of Electric Power Science and Technology

Aiming at the potential large number of controllable loads on the demand side of the community integrated energy system, an optimal dispatch model of the community integrated energy system with energy storage considering the demand side controllable load is proposed. Firstly, the framework of the integrated energy system is analyzed and a mathematical model including modules of energy production, conversion, and storage is established. Secondly, three types of load response models are established according to the response types of demand‑side electric and thermal controllable loads. Finally, with the goal of minimizing the comprehensive operating cost of the community integrated energy …

Modelling Multivariate Dependence Among Cyber Risks, Oliveira Ann Gyamfua Darkwah

Theses and Dissertations

Over the years, there have significant number of cyber attacks in various sectors causing losses to those sectors. We study the multivariate dependence of the cyber risks among these sectors by developing an iterative algorithm using copulas to estimate cyber risks in each sector by measuring the interdependencies and intradependencies among the sectors. The prediction performance of the proposed algorithm shows that the algorithm is superior to other methods.

The Nanograv 15yr Data Set: Search For Signals From New Physics, Adeela Afzal, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Paul T. Baker, Bence Bécsy, Jose Juan Blanco-Pillado, Laura Blecha, Kimberly K. Boddy, Adam Brazier, Paul R. Brook, Sarah Burke-Spolaor, Rand Burnette, Robin Case, Maria Charisi, Shami Chatterjee, Katerina Chatziioannou, Belinda D. Cheeseboro, Siyuan Chen, Tyler Cohen, James M. Cordes

Pacific Faculty Work

The 15 yr pulsar timing data set collected by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) shows positive evidence for the presence of a low-frequency gravitational-wave (GW) background. In this paper, we investigate potential cosmological interpretations of this signal, specifically cosmic inflation, scalar-induced GWs, first-order phase transitions, cosmic strings, and domain walls. We find that, with the exception of stable cosmic strings of field theory origin, all these models can reproduce the observed signal. When compared to the standard interpretation in terms of inspiraling supermassive black hole binaries (SMBHBs), many cosmological models seem to provide a better fit …

An Updated Dust-To-Star Geometry: Dust Attenuation Does Not Depend On Inclination In 1.3 ≤Z ≤2.6 Star-Forming Galaxies From Mosdef, Brian Lorenz, Mariska Kriek, Alice E. Shapley, Naveen A. Reddy, Ryan L. Sanders, Guillermo Barro, Alison L. Coil, Bahram Mobasher, Sedona H. Price, Jordan N. Runco, Irene Shivaei, Brian Siana, Daniel R. Weisz

Pacific Faculty Work

We investigate dust attenuation and its dependence on viewing angle for 308 star-forming galaxies at 1.3 ≤ z ≤ 2.6 from the MOSFIRE Deep Evolution Field survey. We divide galaxies with a detected Hα emission line and coverage of Hβ into eight groups by stellar mass, star formation rate (SFR), and inclination (i.e., axis ratio), and we then stack their spectra. From each stack, we measure the Balmer decrement and gas-phase metallicity, and then we compute the median A V and UV continuum spectral slope (β). First, we find that none of the dust properties (Balmer decrement, A V, or …

Gender Analysis Of Sustainable Housing Choices Of Rental Household Heads In Abuja Municipal Council, Nigeria, Amos Chom Haruna, Stephen Mukiibi, Assumpta Nnaggenda-Musana

CSID Journal of Infrastructure Development

Households' income and other concerns constitute important sustainable housing choices factors that play vital roles in influencing rental housing affordability decisions. The study determined both male and female households can make economic, social, and environmental housing choices to meet their affordable rental needs. A cross-sectional survey was conducted, and a questionnaire was administered to a sample of 285 households obtained from a random sampling of 450 households living in private rental housing in Trademore estate in the Lugbe district of Abuja. Among the 285 households, 226 were household heads representing 79.3% of the respondents' households. The household heads consist of …

Evaluating Insurance Funds As A Financing Source For Infrastructure Development: A Case Study Of Indonesia, Mohammed Ali Berawi, Suyono Dikun, Ristu Bintoro, Mustika Sari, Suci Indah Susilowati

CSID Journal of Infrastructure Development

There is a funding deficit that cannot be covered by relying solely on government money to build Indonesia’s Infrastructure; consequently, additional sources of financing are engaging the private sector to fill the gap. Insurance funds are an alternative funding source in many countries, although their application is still at an early stage. By assessing the risks faced by insurance companies involved in infrastructure investment, this paper attempts to evaluate the use of insurance money as an alternative funding source for infrastructure investment in Indonesia. The analytical hierarchical process (AHP) technique was used in the quantitative methodology of this study to …

What Do Professors Do All Summer?, David J. Mulder, Mike Janssen, Kayt Frisch, Joshua E. Hollinger, Erin Olson

Faculty Work Comprehensive List

"It’s a time to take a breath, re-energize, and re-center while also reconnecting with friends and family."

Posting about the summer rhythm of life for five professors from In All Things - an online journal for critical reflection on faith, culture, art, and every ordinary-yet-graced square inch of God’s creation.

https://inallthings.org/what-do-educators-do-all-summer/

2023 June 29 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

Calculation Of Surface Potential And Analysis Of Sensitivity Factors Under The Influence Of Stray Current In Metro Systems, Huaishen Li, Nenghong Xia, Jun Zhang

Journal of Electric Power Science and Technology

In order to study the intrusion range and degree of subway stray current into the AC power grid, a mathematical model of stray current which is based on the degradation of insulation performance of rail insulation fasteners under actual operation is established, and the stray current leakage of each sleeper is derived. The subway stray current is discretized into a finite point current source according to the number of sleepers, and the Green's function is solved based on the complex image method. The ground potential distribution calculation model caused by the subway stray current is also established, and the commercial …

Life On Other Planets, Dean Norman

Erma Bombeck Writers' Workshop Blog

I watched a TV show called Intelligent Life on Other Planets: What Are the Odds?

Toward One Health: A Spatial Indicator System To Model The Facilitation Of The Spread Of Zoonotic Diseases, Daniel Jato-Espino, Fernando Mayor-Vitoria, Vanessa Moscardó, Fabio Capra-Ribeiro, Leticia Bartolome Del Pino

Faculty Publications

Recurrent outbreaks of zoonotic infectious diseases highlight the importance of considering the interconnections between human, animal, and environmental health in disease prevention and control. This has given rise to the concept of One Health, which recognizes the interconnectedness of between human and animal health within their ecosystems. As a contribution to the One Health approach, this study aims to develop an indicator system to model the facilitation of the spread of zoonotic diseases. Initially, a literature review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement to identify relevant indicators related to One Health. The …